From 174925d340aac55296318e43fd96c0e1d196e105 Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@intel.com>
Date: Fri, 3 Nov 2023 10:47:15 +0200
Subject: [PATCH] mmc: block: Do not lose cache flush during CQE error recovery
Git-commit: 174925d340aac55296318e43fd96c0e1d196e105
Patch-mainline: v6.7-rc4
References: git-fixes
During CQE error recovery, error-free data commands get requeued if there
is any data left to transfer, but non-data commands are completed even
though they have not been processed. Requeue them instead.
Note the only non-data command is cache flush, which would have resulted in
a cache flush being lost if it was queued at the time of CQE recovery.
Fixes: 1e8e55b67030 ("mmc: block: Add CQE support")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20231103084720.6886-2-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/mmc/core/block.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 152dfe593c43..f9a5cffa64b1 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -1482,6 +1482,8 @@ static void mmc_blk_cqe_complete_rq(struct mmc_queue *mq, struct request *req)
blk_mq_requeue_request(req, true);
else
__blk_mq_end_request(req, BLK_STS_OK);
+ } else if (mq->in_recovery) {
+ blk_mq_requeue_request(req, true);
} else {
blk_mq_end_request(req, BLK_STS_OK);
}
--
2.35.3